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Module ID Code
35
Preliminary Operating Considerations
This chapter explains how the module and the SLC processor
communicate through the processor's I/O image tables. It also
describes the module's input filter characteristics. Topics discussed
include:
• module ID code.
• module addressing.
• input channel characteristics.
• response to slot disabling.
The module ID code is a unique number assigned to each type of
1746 I/O module. The ID defines for the processor the type of I/O
module and the number of words used in the processor's I/O image
table.
Use the system I/O configuration display to select the 1746-INT4
module or manually enter the module ID. Do this by selecting Other
from the list of modules on the system I/O configuration display and
enter 3515, the ID code for the 1746-INT4 module.
No special I/O configuration is required. The module ID automatically
assigns the correct number of input and output words.
Chapter
Publication 1746-UM614B-EN-P - September 2007
4
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